<% if post.liked_users.any? %>
  <%= post.liked_users.map{ |u| u.display_name }.join(",") %> Tap Like
<% end %>

<% if current_user %>
  <% if post.find_like(current_user) %>
    <%= link_to "-1", unlike_post_path(post), :method => :post, :remote => true, :class => "btn btn-primary" %>
  <% else %>
    <%= link_to "+1", like_post_path(post), :method => :post, :remote => true, :class => "btn btn-primary" %>
  <% end %>
<% end %>
